Home / 393,023.85-542,388.18-220,945.23

Finding the Fourth Proportional to 393,023.85, 542,388.18 and 220,945.23

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Solution

The fourth proportional to 393,023.85, 542,388.18 and 220,945.23 is: 304,913.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,023.85 : 542,388.18 = 220,945.23 : x
  2. Step 2: Convert to fraction form
    393,023.85/542,388.18 = 220,945.23/x
  3. Step 3: Cross multiply
    393,023.85x = 542,388.18 × 220,945.23
  4. Step 4: Simplify right side
    393,023.85x = 119,838,081,179.38
  5. Step 5: Solve for x
    x = 119,838,081,179.38/393,023.85
  6. Step 6: Final answer
    x = 304,913.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.